ASRock X99 Extreme11 User Manual - Page 24
Expansion Slots PCI Express Slots
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2.4 Expansion Slots (PCI Express Slots) here are 5 PCI Express slots on the motherboard. Before installing an expansion card, please make sure that the power supply is switched of or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation. PCIe slots: PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards. PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE5 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. *If the PCIE3 (x8 mode) is occupied, the PCIE4 slot will downgrade to x8 mode. PCIe Slot Conigurations Single Graphics Card PCIE1 x16 PCIE2 N/A PCIE3 N/A PCIE4 N/A PCIE5 N/A Two Graphics Cards in CrossFireXTM or SLITM Mode x16 N/A N/A x16 N/A hree Graphics Cards in 3-Way CrossFireXTM Mode x16 x16 N/A x16 N/A or 3-Way SLITM Mode Four Graphics Cards in 4-Way CrossFireXTM Mode x16 x16 N/A x16 x16 or 4-Way SLITM Mode For a better thermal environment, please connect a chassis fan to the motherboard's chassis fan connector (CHA_FAN1, CHA_FAN2 or CHA_FAN3) when using multiple graphics cards. English 24